Screw-driving machine.



- D. D. HARBOT.

SCREW DRIVING MACHINE.

APPLICATION FILED JAN. 11, 1911.

1,093,848. Patented Apr. 21, 1914,

1 l WITNESSES l6.

DELBERT D. HARBOT, OF NICHOLSgNEW YORK.

SCREW-DRIVING MACHINE.

Specification of Letters Patent. P t t d 21, 1914 Application filed January 11, 1911. Serial Ito. 602.127.

T all whom.- it may concern Beit known that I, DELBERT D. HARBOT, citizen of' the United States, residing at Nichols, in the county of Tioga and State of New York, have invented certain new and useful Improvements in Screw-Driving Maform 5.

chines, of which the following is a specification.

The object of my invention is to provide a power machine for turning or, forcing. lag screws intorailway ties for the purpose of securing the rails upon the ties.

A further object is to adapt the machine to driving the screws into the'tie on either or both sides of both rails.

The manner of accomplishing these objects with others will be fully set out in the following specification, when read in con nection with the drawings'accompanying the same and forming a part hereof.

Figure 1 is a view in elevation, Fig. 2 is a top plan view thereof, and Fig. 3 is a sectional view through the clutch.

Referring to the drawings 2 designates a railroad tie. 3, and 4 the rails. Upon the rails is a truck provided with a platform 5 mounted upon axles 6 with wheels 8 and 10. adapted to travel on the track( On the truck is secured a semi-circular track or guide rail 12 on which the operating machine hereinafter to be described is adapted to travel when the machine is operating at different positions on the ties. Upon the platform 5 are set 'brackets 14. 15 and 16. On each of the brackets 14 is a head 18 in which a shaft 20 finds its bearings. Upon this shaft is mounted a pulley 22 which is belted to the power. Upon the shaft is also mounted a ring 23 which is provided on its opposite sides with perforated lugs 25 to which arms 26 are pivoted. The outer ends of these arms are pivoted to a lever 28 which lever 28 is pivoted in the base of the plat- Between the ring 23 and the head 18 is a collar 30 fixed upon the shaft 20.

The upper end of the bracket 15 is provided with a head 32 in which is ournal ed a shaft 34 provided at its inner end with a screw gear 35 and upon the outer end is mounted a friction faced pulley 36. Upon the platform 5 is secured a shaft box 38 in which is vertically set a shaft 40, The shaft 40 is stayed in a vertical positlon by placing a collar 42 upon the shaft'34 and the collar 44 around near the top of the shaft 40 then securing to the collar 44 and the box and the collar 42 another brace 46. In this manner the shaft 40 can rotate but Wlll always be held in a vertical position.

Upon the shaft 40 is a beveled gear 48 which meshes in with the screw gear 35.

collar 42 a brace and between the shaft Around the shaft 40 below the collar 44 is a loose collar 50 and over the shaft box 38 is another loose collar 52 to which are attached braces 54 and 55. These braces are attached to a collar 5 in which collar is mounted a shaft 58 which on its inner end is provided with a beveled gear 60 that meshes in with the gear 48. To the collar 56 are secured bars 62 which extendforward and are fastened to the collar64 through which also the shaft- 58 finds another bearing and its outer end is provided with another beveled gear 65. The collar 64 is set in a horizontal plane by braces 66'. These braces are secured to a loose collar 68 at the lower end and a loose collar 70 at the upper end. There is alsos'ecured to the collar 50 a side bar 72 of a frame and to the loose collar 52 another side bar 74. These two bars are connected together by an end bar 75 and supplied with a handle or lever 76.

In the loose collars 68 and 70 is vertically with a groove 82 running longitudinally of the spindle and upon the shaft is acollar 84' provided on its upper part with beveled gear85. The collar 84 is provided with a spline or key on its inner side (not shown) which key engages in the groove 82 and permits the shaft 80 to be raised and lowered vertically. The said beveled near 85 meshes with the beveled gear 65.v Upon the upper end of the shaft 80, a collar 105 is secured by set screw 106 to limit downward'movement of the shaft.

Upon the lower end of the shaft 80 is secured a chuck 88 by a set screw 90 and is provided with a recess 92 adapted to engage the head 94 of a screw, 96. To theunder side of the bar 74 near the collar 68 is a hanging bracket 98 which is provided with the arm 100 upon which rests the track 12. There is also secured to the underside of the bar 7 4 a caster 102 which is adapted to travel around on the track 12 as the frame is moved around in a horizontal plane upon the carriage or platform 5. There may also be carried on the truck a gasolene or other engine to supply the power.

The manner of operating my device is substantially as follows: Power from the engine is applied to the pulley 22, then the lever 28 is operated to push forward the puli ley 22 against the friction faced pulley 36 5 which being fixed upon the screw shaft 34, rotates said shaft and as the gear 35 meshes in with the gear 48 said gear will be rotated and this will rotate the gear 60 with .which it meshes. The rotation of the gear 60 will rotate the gear 65 upon the opposite end of the shaft 58 and this will rotate the gear 85 and with it the shaft 80 and! since the screw 96 is placed in the socket 92 of the wrench SS it will rotate the screw into the. tie 2 and the shaft 80 will move vertically until the screw is fixed in the tie or until the collar 105, held by its set screw 10G, comes in contact with the collar 70 and will not permit it to move farther down. If the screw is forced in until the head rests upon the rail 4 and cannot be turned farther the friction gear 36 will slip upon the pulley t 22, even if the operator does not grasp the lever 28 and draw the pulley 22 out of fric- 1 t-ional engagement with the pulley 86 by operating the lever 28 to bring the ring 24 against the fixed collar 30 andthus pull the i shaft with the pulley 22 away from the fricl tion pulley 3G. When it is desired to turn the screw into the tie beside the other rail, 1 then the operator takes hold of the handle T6 and pulls around the frame with the caster 102 upon the track 12 with the shaft 5 4:0 as a pivot and then the shaft 80 will be in the same position relative to the opposite *1 rail as it is in the position shown in Fig. 1. Then the operator operates the lever 28 to make the frictional engagement between the pulley-22 and the pulley 36 which, as bet fore. will finally rotate the shaft 80 and turn 3 the screw into the tie 2 on the other side of 1 theopposite rail. If it be only .to put the screw into the tie on the opposite side of the rail t then the operator grasps the handle 76 and moves it a short distance which will bring the shaft on the opposite side of the rail 4:. Since this truck has the power upon it and all of the machinery for driving the screw it can be moved along on the wheels 8 and 10 on the track from one'tie to another. It will be seen by this device that these screws can be turned or forced into one or both sides of both rails and at great rapidity and the carriage can follow along the track carrying the device. It can be used to draw out the screws and to bore a slight hole to aid in introducing the screw.

l-laving now described my invention what I claim is:

In a screw drivin machine, a platform, an arcuate guide rai fixed to the platform, a driving shaft journaled at fixed points upon the platform and having a screw gear, a shaft journaled upon the platform and disposed at a right angle to the driving shaft. a gear wheel fixed to the last mentioned shaft and meshing with the screw gear, a bar pivotally mounted upon the last mentioned shaft, a bracket carried by the bar and extending around and under the edge of the arcuate guide rail, a shaft journaled upon the bar and having a gear wheel which meshes with the first mentioned gear wheel. a spindle slidably journaled in the bar and means for rotating the spindle from the shaft journaled upon the bar.

In testimony whereof I afiix my signature in presence of two witnesses.

DELBERT D. HARBOT. Witnesses:

PATRICK MACK, Ganoxsn Omy, 

